Copying, moving, renaming, and deleting are far and away the most heavily used features within Windows Explorer, representing 50% of total command usage (based on Windows 7 telemetry data). For Windows 8, we want to make sure that using these core file management commands, which we collectively refer to as “copy jobs,” is a great experience.

We know from telemetry data (which is based on hundreds of millions of individuals opting in to provide anonymous data about product usage), that although 50% of these jobs take less than 10 seconds to complete, many people are also doing much larger jobs, 20% of which take more than 2 minutes to complete. Prior versions of Windows Explorer can handle these kinds of jobs, but Explorer isn’t optimized for high-volume jobs or for executing multiple copy jobs concurrently.